运用轻便动力触探仪研究黄土的岩土工程特性

运用轻便动力触探仪研究黄土的岩土工程特性 English Version

清华大学土木工程系!北京；100084；中国科学院地质研究所!北京；100029；法国帕斯卡大学科学技术工程师学院CUST!法国克莱蒙ClermontFerrand；63174；

基金项目: 国家教委回国人员研究启动基金;;博士后基金;;法国帕斯卡大学土木工程实验室资助

Department of Civil Engineering Tsinghua University Beijing 100084 Institute of Geology Chinese Academy of Sciences Beijing 100029, CUST University of Blaise Pascal Clermont

摘要: 运用可变能量轻便动力触探仪对黄土在天然状态及饱和状态下进行了一系列现场触探试验，并结合该仪器开展了黄土天然状态下及饱和状态下的静力分级加载载荷试验。在这些试验所获结果基础上，分析了黄土的岩土力学性质，尤其是黄土的湿陷性。对比用其它手段测得的湿陷参数，提出了一种运用触探仪现场测试黄土的力学强度，进而运用所测的力学强度对黄土的湿陷性进行间接评价的简单方法。
- 动力触探仪 /
- 黄土 /
- 湿陷性 /
- 岩土工程性质
Abstract: A series of tests have been carried out for loess in saturated and natural conditions respectively using a portable dynamic penetrometer with variable energy. Coupled with the apparatus, the static load tests were also performed on loess in same conditions. On the basis of the results obtained, the geotechnical properties of loess, especially its collapsibility are analyzed. Compared to other methods measuring the collapsibility index of loess, the authors proposed an indirect and simple method to evaluate the collapsibility of loess by measuring the mechanical resistance in situ with the penetrometer.
- dynamic penetrometer /
- loess /
- collapsibility /
- geotechnical characters